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Proceedings Paper

Lasers in energy device manufacturing
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Paper Abstract

Global warming is a current topic all over the world. CO2 emissions must be lowered to stop the already started climate change. Developing regenerative energy sources, like photovoltaics and fuel cells contributes to the solution of this problem. Innovative technologies and strategies need to be competitive with conventional energy sources. During the last years, the photovoltaic solar cell industry has experienced enormous growth. However, for solar cells to be competitive on the longer term, both an increase in efficiency as well as reduction in costs is necessary. An effective method to reduce costs of silicon solar cells is reducing the wafer thickness, because silicon makes up a large part of production costs. Consequently, contact free laser processing has a large advantage, because of the decrease in waste materials due to broken wafers as caused by other manufacturing processes. Additionally, many novel high efficiency solar cell concepts are only economically feasible with laser technology, e.g. for scribing silicon thin-film solar cells. This paper describes laser hole drilling, structuring and texturing of silicon wafer based solar cells and describes thin film solar cell scribing. Furthermore, different types of lasers are discussed with respect to processing quality and time.

Paper Details

Date Published: 23 February 2008
PDF: 10 pages
Proc. SPIE 6880, Laser-based Micro- and Nanopackaging and Assembly II, 68800B (23 February 2008); doi: 10.1117/12.760350
Show Author Affiliations
A. Ostendorf, Laser Zentrum Hannover (Germany)
A. Schoonderbeek, Laser Zentrum Hannover (Germany)

Published in SPIE Proceedings Vol. 6880:
Laser-based Micro- and Nanopackaging and Assembly II
Wilhelm Pfleging; Yongfeng Lu; Kunihiko Washio; Willem Hoving; Jun Amako, Editor(s)

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